[Python-ideas] Make traceback messages aware of line continuation

[Felipe Cruz]

+1

It would be great to have this feature.


2013/4/30 Giampaolo Rodola' <g.rodola at gmail.com>

> 2013/4/30 Antoine Pitrou <solipsis at pitrou.net>:
> > On Mon, 29 Apr 2013 20:40:37 -0400
> > Terry Jan Reedy <tjreedy at udel.edu> wrote:
> >> >>
> >> >> The information about the statement which produced the exception is
> lost.
> >> >> Instead I would expect:
> >> >>
> >> >> Traceback (most recent call last):
> >> >>    File "foo.py", line 1, in <module>
> >> >>      assert \
> >> >>          1 == 0, \
> >> >>              "error"
> >> >> AssertionError: error
> >> >>
> >> >>
> >> >> Not sure how easy this is to implement but I think it would be a good
> >> >> enhancement.
> >> >> Thoughts?
> >>
> >> Very dubious idea, for multiple reasons given on the issue.
> >>
> >> > It seems this is already tracked in http://bugs.python.org/issue12458
> >>
> >> For your example, the OP of that issue would replace the line '"error"'
> >> with 'assert', which would not be helpful at all. If your statement was
> >>
> >> assert some_fairly_long_expression_with_calls ==\
> >>      something_else, "error"
> >>
> >> then is would not be clear that backing up would be helpful.
> >
> > Perhaps you've missed that Giampaolo's suggestion was to print the
> > *entire* statement, not just one line chosen at random?
>
> Exactly.
>
> 2013/4/30 Guido van Rossum <guido at python.org>:
> > Would it also understand line continuations using parentheses ( the more
> > common style)?
>
> Yes, definitively (see http://bugs.python.org/msg188159).
> I came up with this idea because this is especially annoying during
> tests, where it's not rare to have long self.assert* statements split
> over multiple lines.
> Every time you get a failure you'll likely have to open the test file
> with an editor and go to line N in order to figure out what the entire
> assert statement looked like.
>
> --- Giampaolo
> https://code.google.com/p/pyftpdlib/
> https://code.google.com/p/psutil/
> https://code.google.com/p/pysendfile/
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>



-- 
Felipe Cruz
http://about.me/felipecruz
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